[SIGMON-222] Support many EE references

Context

• task: https://its.cern.ch/jira/browse/SIGMON-222
• lhc-sm-api MR: lhc-sm-api!106 (merged)

What was done

• notebooks use lhcsmapi.reference not lhcsmapi.reference.Reference.Reference
• new RbQuerys methods used

TODO

• ?

QA

• no sonar
• no tests
• notebooks passed: https://gitlab.cern.ch/LHCData/lhc-sm-hwc/-/jobs/17324037

Review objectives

• assessment of code functionality
• assessment of code quality
• identifying potential refactorings / logic common to other projects
• knowledge sharing